package com.ruoyi.framework.web.exception;

import com.ruoyi.project.app.util.XException;
import com.ruoyi.project.app.util.XResult;
import org.apache.shiro.authz.AuthorizationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import com.ruoyi.common.exception.DemoModeException;
import com.ruoyi.common.utils.security.PermissionUtils;
import com.ruoyi.framework.web.domain.AjaxResult;

import javax.servlet.http.HttpServletRequest;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Map;

/**
 * 自定义异常处理器
 *
 * @author ruoyi
 */
@RestControllerAdvice
public class DefaultExceptionHandler {
    private static final Logger log = LoggerFactory.getLogger(DefaultExceptionHandler.class);

    /**
     * 权限校验失败
     */
    @ExceptionHandler(AuthorizationException.class)
    public AjaxResult handleAuthorizationException(AuthorizationException e) {
        log.error(e.getMessage(), e);
        return AjaxResult.error(PermissionUtils.getMsg(e.getMessage()));
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler({HttpRequestMethodNotSupportedException.class})
    public AjaxResult handleException(HttpRequestMethodNotSupportedException e) {
        log.error(e.getMessage(), e);
        return AjaxResult.error("不支持' " + e.getMethod() + "'请求");
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult notFount(RuntimeException e) {
        log.error("运行时异常:", e);
        return AjaxResult.error("运行时异常:" + e.getMessage());
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult handleException(Exception e) {
        log.error(e.getMessage(), e);
        return AjaxResult.error("服务器错误，请联系管理员");
    }

    /**
     * 演示模式异常
     */
    @ExceptionHandler(DemoModeException.class)
    public AjaxResult demoModeException(DemoModeException e) {
        return AjaxResult.error("演示模式，不允许操作");
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(ParamsException.class)
    public AjaxResult handleParamsException(Exception e) {
        return AjaxResult.error(e.getLocalizedMessage());
    }

    @ResponseBody
    @ResponseStatus(HttpStatus.OK)
    @ExceptionHandler(value = XException.class)
    public Object handlerMyException(HttpServletRequest request, XException ex) {
        log.error("------> URL:\t\t" + request.getRequestURI());
        Map<String, String[]> parameterMap = request.getParameterMap();
        for (String key : parameterMap.keySet()) {
            log.error("------> Params:\t\t" + key + " = " + request.getParameter(key));
        }
        log.error("------> Exception:\t\t" + ex.getLocalizedMessage());
        return new XResult(ex.getLocalizedMessage());
    }

//    @ResponseBody
//    @ResponseStatus(HttpStatus.OK)
//    @ExceptionHandler(value = Exception.class)
//    public Object handlerException(HttpServletRequest request, Exception ex) {
//        log.error("------> URL:\t\t" + request.getRequestURI());
//        Map<String, String[]> parameterMap = request.getParameterMap();
//        for (String key : parameterMap.keySet()) {
//            log.error("------> Params:\t\t" + key + " = " + request.getParameter(key));
//        }
//        log.error("------> Exception:\t\t" + errInfo(ex));
//        //ex.printStackTrace();
//        //logger.error("------> Exception:\t" + ex.getLocalizedMessage());
//        return  new XResult("系统错误，请联系管理员！");
//    }

    /**
     * 获取异常的堆栈信息
     *
     * @param e 异常
     * @return 堆栈信息
     */
    private String errInfo(Exception e) {
        StringWriter sw = null;
        PrintWriter pw = null;
        try {
            sw = new StringWriter();
            pw = new PrintWriter(sw);
            // 将出错的栈信息输出到printWriter中
            e.printStackTrace(pw);
            pw.flush();
            sw.flush();
        } finally {
            if (sw != null) {
                try {
                    sw.close();
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }
            if (pw != null) {
                pw.close();
            }
        }
        return sw.toString();
    }


}
